Reid Barton writes:

Hi Joachim,

The graphs like https://perf.haskell.org/ghc/#graph/buildtime/make are very helpful, but I haven't found a way to adjust the range of commits shown from the default of the last 50 commits. For example, suppose I wanted to see the history of build time over the past 12 months and then narrow in on commits that caused regressions. Is there a way to do that using the https://perf.haskell.org/ghc/ website?

This is precisely the goal of my own ghc-perf tool [1], although it has sadly languished in the recent months. I really need to work out some Postgrest performance issues and find a more reliable hosting situation for it.

Failing that, is the data that goes into these graphs available for download in some form?

Joachim can likely provide a more helpful answer, but at very least the logs are available here [2]. I use a set of scripts [3] to extract performance numbers from these logs into PostgreSQL. Cheers, - Ben [1] http://home.smart-cactus.org/~ben/ghc-perf/ [2] https://github.com/nomeata/ghc-speed-logs [3] https://github.com/bgamari/ghc-perf-import/